ANNALS OF THE QUEENSLAND MUSEUM, No. 6 
17 
middle of the base of the orbital process externally is comparatively 
very small ; the squamosal articulation very broad. On the hinder 
surface of the bone, a little below the squamosal process, low ridges, 
which proceed from each end of that process, meet and form together 
a descending ridge. Locality, Lower Cooper. 
Coracoid. — Plate V., fig. 2.— A fragment of a left coracoid 
exhibiting a great part of the precoracoid process, with the foramen 
for the supracoracoideus nerve, evidently from a large pelican, 
but too scanty to supply further information. Locality, Lower 
Cooper. 
Tarsometatarsus. — Plate V., fig. 3. — Part of the distal 
end of a left tarsometarsus, shewing the third and most of 
the fourth trochleas. The third trochlea is 19 mm. long, in P. 
conspicillatus it is at the most 17 mm. It seems to have been of 
nearly the same form from its proximal end, where, between the 
rotular prominences, it commences in a shallow, but distinct cavity. 
Locality, Lower Cooper. 
Pelecanus proavus de Vis. 
Femur. — The distal end of a right femur entire on the trochlear 
aspect, imperfect on the preaxial (Plate V., fig. 4) : in general 
configuration premonitory of modern pelicans, in size, 29 mm. 
across the trochleas against 30.5 mm. in an average example of P. 
conspicillatus . It is in the inferior size of the trochleas that the 
most striking difference presents itself ; in P. conspicillatus the 
longitudinal extent of the ulnar is 21.5 mm., of the radial 16.5 ; 
in the fossil the ulnar is 18, the radial 14.5. There is also a large 
difference in the condition of the ectepicondylar region ; in the 
extinct bird it is comparatively narrow and rather deeply sunken 
between the trochlea and the ectepicondylar edge, the cavity 
formed extending distad nearly two-thirds of the length of the 
trochlea (fig. A, a). In the living pelican the surface is convex 
to near the proximal fourth of the trochlea, where a comparatively 
small cavity is situated. Locality, Lower Cooper. 
Tibia. — Distal end of a right tibia (Plate V., fig. 5). With the 
exception that the bridge over the ext. dig. com. tendon has never 
been completed, there is nothing in this fragment to distinguish 
it from a corresponding fragment from the extinct pelican. Locality, 
Lower Cooper. 
Plotus laticeps n.s. 
Cranium. — Short of all accessories (Plate VI., fig. 1). Compared 
with the cranium of P. novoehollandio? , the following measurements 
are significant of specific difference : — 
Fossil. P novoehollandioe 
Total length from occiput to frontonasal suture . . 49*5 mm. 48*0 mm 
Greatest breadth 24-5 230., 
Breadth of frontonasal joint .. .. .. ll'O „ 8'5 ,, 
Breadth of basioccipital . . . . . . . . 8 5,, 7'0 
Length of basioccipital .. .. .. ll'O „ 10*5 
